This is a very simple game if you have played Battleship as a kid.
What you need: 1 ping-pong ball
1 ping-pong table
18 cups per side of table
24 case of beer

The rules are simple, place the cups on the table so they look like ships from a battleship game.
Battleship: 5 cups
Cruiser: 4 cups
Sub: 3 cups
Destroyer: 4 cups
PT Boat: 2 cups
Total: 18 cups
Once this is done, you use 12 beers per side and split up the beer between 9 cups. You choose what side goes first and then start trying to bounce the ball into the cup. Once the ball lands into the cup, the person who's cup has been hit, must drink the entire cup before they go again.